Deserialization of Untrusted Data Affecting nemo package, versions <2.7.3-r27


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.1% (65th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-NEMO-19533530
  • published5 Sept 2026
  • disclosed22 Aug 2026

Introduced: 22 Aug 2026

CVE-2026-71513  (opens in a new tab)
CWE-502  (opens in a new tab)

How to fix?

Upgrade Chainguard nemo to version 2.7.3-r27 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream nemo package and not the nemo package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

NLTK before 3.10.3 contains a remote code execution vulnerability in AllowlistUnpickler that validates only the pickle module string and not the global name, allowing attackers to resolve dotted names by attribute traversal to callables outside the allowlisted namespace. Attackers can craft untrusted transition-parser models that execute arbitrary commands when TransitionParser.parse loads the model through allowlisted_pickle_load.

CVSS Base Scores

version 3.1